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  • DataGrid 完全攻略之二(把数据导出到Excel)

    前台代码:html
    <%@ Page language="c#" Codebehind="ExportExcel.aspx.cs" AutoEventWireup="false" Inherits="MsDataGrid.ExportExcel" %>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
    <HTML>
        
    <HEAD>
            
    <title>DataGrid使用举例</title>
            
    <meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
            
    <meta name="CODE_LANGUAGE" Content="C#">
            
    <meta name="vs_defaultClientScript" content="JavaScript">
            
    <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
        
    </HEAD>
        
    <body MS_POSITIONING="GridLayout">
            
    <form id="Form1" method="post" runat="server">
                
    <FONT face="宋体">
                    
    <asp:DataGrid id="dgShow" style="Z-INDEX: 100; LEFT: 26px; POSITION: absolute; TOP: 89px" runat="server" Width="842px" Height="172px" BorderColor="Tan" BorderWidth="1px" BackColor="LightGoldenrodYellow" CellPadding="2" GridLines="None" ForeColor="Black" PageSize="1" AutoGenerateColumns="False" ShowFooter="True" AllowPaging="True">
                        
    <SelectedItemStyle ForeColor="GhostWhite" BackColor="DarkSlateBlue"></SelectedItemStyle>
                        
    <AlternatingItemStyle BackColor="PaleGoldenrod"></AlternatingItemStyle>
                        
    <HeaderStyle Font-Bold="True" BackColor="Tan"></HeaderStyle>
                        
    <FooterStyle BackColor="Tan"></FooterStyle>
                        
    <Columns>
                            
    <asp:BoundColumn DataField="StudentID" ReadOnly="True" HeaderText="学生ID"></asp:BoundColumn>
                            
    <asp:BoundColumn DataField="StudentName" HeaderText="学生姓名"></asp:BoundColumn>
                            
    <asp:BoundColumn DataField="StudentPass" HeaderText="密码"></asp:BoundColumn>
                            
    <asp:BoundColumn DataField="Sex" HeaderText="性别"></asp:BoundColumn>
                            
    <asp:BoundColumn DataField="Birthday" HeaderText="生日" DataFormatString="{0:yyyy-M-d}"></asp:BoundColumn>
                            
    <asp:BoundColumn DataField="Email" HeaderText="邮件地址"></asp:BoundColumn>
                            
    <asp:BoundColumn DataField="Score" HeaderText="分数"></asp:BoundColumn>
                            
    <asp:ButtonColumn Text="选择" CommandName="Select"></asp:ButtonColumn>
                        
    </Columns>
                        
    <PagerStyle HorizontalAlign="Center" ForeColor="DarkSlateBlue" BackColor="PaleGoldenrod" Mode="NumericPages"></PagerStyle>
                    
    </asp:DataGrid>
                    
    <asp:Button id="btnMIME" style="Z-INDEX: 102; LEFT: 230px; POSITION: absolute; TOP: 44px" runat="server" Text="导出"></asp:Button></FONT>
            
    </form>
        
    </body>
    </HTML>

    后台代码:cs
    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Web;
    using System.Web.SessionState;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.HtmlControls;
    using System.Data.SqlClient;
    namespace MsDataGrid
    {
        
    /// <summary>
        
    /// WebForm1 的摘要说明。
        
    /// </summary>

        public class ExportExcel : System.Web.UI.Page
        
    {
            
    protected System.Web.UI.WebControls.Button btnMIME;
            
    protected System.Web.UI.WebControls.DataGrid dgShow;
        
            
    private void Page_Load(object sender, System.EventArgs e)
            
    {
                
    // 在此处放置用户代码以初始化页面
                if(!IsPostBack)
                    BindData();
                
                
            }

            
    private void BindData()
            
    {
                
    string strCon = System.Configuration.ConfigurationSettings.AppSettings["DSN"];
                SqlConnection con 
    = new SqlConnection(strCon);
                SqlDataAdapter da 
    = new SqlDataAdapter("Select * from tbStudentinfo",con);
                DataSet ds 
    = new DataSet();
                da.Fill(ds,
    "studentinfo");
                dgShow.DataSource 
    = ds.Tables["studentinfo"].DefaultView;
                dgShow.DataBind();
                
            }

            
    Web Form Designer generated code

            
    private void btnMIME_Click(object sender, System.EventArgs e)
            
    {
                Response.ContentType 
    = "application/vnd.ms-excel";
                Response.Charset 
    = "";
                
    this.EnableViewState = false;
                System.IO.StringWriter sw 
    = new System.IO.StringWriter();
                System.Web.UI.HtmlTextWriter hw 
    = new System.Web.UI.HtmlTextWriter(sw);
                
    int nCur = dgShow.CurrentPageIndex;
                
    int nSize = dgShow.PageSize;
                
                dgShow.AllowPaging 
    = false;
                BindData();
                    
                dgShow.Columns[
    7].Visible =false;
                dgShow.RenderControl(hw);
                dgShow.Columns[
    7].Visible =true;
                
                
    //以下恢复分页
                dgShow.AllowPaging = true;
                dgShow.CurrentPageIndex 
    = nCur;
                dgShow.PageSize 
    = nSize;
                BindData();
                Response.Write(sw.ToString());
                Response.End();
            }

        }

    }

    方法二:
    if(DataGrid1.Items.Count==0)
        {
         Response.Write("<script>alert('对不起,你没有查询到任何记录,不能导出数据')</script>");
        }
        else
        {
         

         Response.Clear();
         Response.Buffer= true;
         Response.Charset="GB2312";
         Response.AppendHeader("Content-Disposition","attachment;filename=FileName.xls");
         Response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");
         //设置输出流为简体中文
         Response.ContentType = "application/ms-excel";
         //设置输出文件类型为excel文件。
         this.EnableViewState = false;
         System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN",true);
         System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
         System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
         DataGrid1.RenderControl(oHtmlTextWriter);
         Response.Write(oStringWriter.ToString());
         Response.End();

    }
            Response.Clear();
            Response.Buffer = true;
            Response.Charset = "GB2312";
            Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
            // 如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码!!!
            Response.ContentEncoding = System.Text.Encoding.UTF7;
            Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
            System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
            this.GridView1.RenderControl(oHtmlTextWriter);
            Response.Output.Write(oStringWriter.ToString());
            Response.Flush();
            Response.End();

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  • 原文地址:https://www.cnblogs.com/ghd258/p/253181.html
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